—Is this your room？—______
A．Yes，this is. B．No，this isn't. C．No，it isn't.
—Let________clean the classroom.—Good idea.
A．we B．us C．she
—Can you water the flowers？—________
A．Yes，I can. B．Yes，I do. C．Yes，I am.
He can________．He's great.
A．to wash the clothes B．washing the clothes C．wash the clothes
—What ______ she do on Sundays?
—She often washes the clothes.
A．does B．can C．do